I have every one of the highlighted rounds. I had a 243 and a 308,Is it better than the old ones for hunting ?Is a man bun a requirement for having one ? Will it kill a Texas whitetail deader than a 243,22-250, 7mm-08, 308, 270 Win. 25-06, 30-06, 30-30 ?Is Keto a requirement for having one ?